Cardiac output and heart rate in man during simulated swimming while breath-holding.
نویسندگان
چکیده
منابع مشابه
Effect of breath holding during abdominal exercise on blood pressure and heart rate in hypertensive individuals
Background: Abdominal exercises have become an important part of fitness and rehabilitation. Sit ups are most common abdominal exercise performed by people without proper training. Hypertension is a progressive cardiovascular syndrome arising from complex and interrel blood pressure in the arteries is elevated. Material and methods: An experimental study including 30 hypertensive males and fema...
متن کاملUnderwater Stroke Kinematics During Breathing and Breath-holding Front Crawl Swimming.
The aim of the present study was to determine the effects of breathing on the three - dimensional underwater stroke kinematics of front crawl swimming. Ten female competitive freestyle swimmers participated in the study. Each subject swam a number of front crawl trials of 25 m at a constant speed under breathing and breath-holding conditions. The underwater motion of each subject's right arm wa...
متن کاملAssessment of breath holding index during orthostasis.
The aim of the study was to assess differences in cerebrovascular reactivity in healthy subjects during orthostasis. Twenty healthy volunteers (11 men and 9 women) with no atherosclerotic risk factors were evaluated by use of transcranial Doppler. The breath holding index (BHI) was obtained in supine and upright posture using standardized procedure. Student's t-test was used on comparison of th...
متن کاملHeart rate and stroke volume contribution to cardiac output in swimming yellowfin tuna: response to exercise and temperature.
Cardiac performance in the yellowfin tuna (Thunnus albacares, 673-2470 g, 33-53 cm fork length, FL) was examined in unanesthetized fish swimming in a large water tunnel. Yellowfin tuna were fitted with either electrocardiogram electrodes or a transcutaneous Doppler blood-flow probe over the ventral aorta and exposed to changes in swimming velocity (range 0.8-2.9 FLs-1) or to an acute change in ...
متن کاملAnalysis of diaphragm movement during tidal breathing and during its activation while breath holding using MRI synchronized with spirometry.
Using magnetic resonance imaging (MRI) in conjunction with synchronized spirometry we analyzed and compared diaphragm movement during tidal breathing and voluntary movement of the diaphragm while breath holding. Breathing cycles of 16 healthy subjects were examined using a dynamic sequence (77 slices in sagittal plane during 20 s, 1NSA, 240x256, TR4.48, TE2.24, FA90, TSE1, FOV 328). The amplitu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Japanese Journal of Physiology
سال: 1990
ISSN: 0021-521X
DOI: 10.2170/jjphysiol.40.117